Witness as five film crews follow a rich variety of bird migrations through 40 countries and each of the seven continents. With teams totalling more than 450 people, 17 pilots and 14 cinematographers used planes, gliders, helicopters and balloons to fly alongside, above, below and in front of their subjects. Open your eyes to the wonders of the natural world as you fly along with the world's most gorgeous birds through areas. - Documentary follows birds in flight.